Parent State ID: 14
Action Taken: left(robot1, tile_1-4, tile_1-3)
Action Reasoning: The current state has Robot1 on tile_1-4, holding a black paint gun. According to the goal, the first action should be to move the highest robot to tile_1-0. Since Robot1 is not at tile_1-0, we need to move it there. The shortest path involves moving left from tile_1-4 to tile_1-3. This action will bring Robot1 closer to tile_1-0, aligning with the strategy to start painting from the leftmost tile in the first row.
State Description: Robot1 has moved from tile_1-4 to tile_1-3, still holding a black paint gun. Tile_1-4 is now clear, and tile_1-3 is occupied by Robot1.
Action Path: ['left(robot1, tile_1-4, tile_1-3)', 'left(robot1, tile_1-3, tile_1-2)', 'right(robot1, tile_1-2, tile_1-3)', 'right(robot1, tile_1-3, tile_1-4)', 'change-color(robot1, white, black)', 'left(robot1, tile_1-4, tile_1-3)']

INACTIVE REASON: Pruned in beam search
